Ruby on Rails查詢相關

Question

我有2個模特

文件夾：name：parent_id

AUTHFOLDERS：folder_id：company_id：user_id：角色＃用於共享

class Folder < ActiveRecord::Base
  has_many :authfolders
  has_many :companies, :through => :authfolders

  accepts_nested_attributes_for :authfolders

  validates :name, presence: true
end

class Authfolder < ActiveRecord::Base
  belongs_to :company
  belongs_to :folder
end

如何選擇Authfolders.company_id = x “文件夾”？

Answer 1

您可以加入相關表，然后設置條件：

Folder.joins(:authfolders).where('authfolders.company_id = :company_id', company_id: x)